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2014 | 1 | 1 |

Article title

Spectrophotometric observations of thiacyanine dye J-aggregation on citrate capped silver nanoparticles


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The J-aggregation of anionic cyanine dye, 5,5’ –
disulfopropyl-3,3’ – dichloro - thiacyanine sodium salt (TC)
in the presence of 2x10-3 M KCl and citrate capped silver
nanoparticles (AgNPs, diameter ~10nm) was investigated.
The influence of added salt (KCl), as well as AgNPs and
TC concentration on the intensity of the absorption bands
with the maxima at 464 and 481 nm, characteristic of the
J-aggregation of the dye in solution and on AgNPs surface,
respectively, was studied. The spectrophotometric and
fluorescence spectra confirmed that AgNPs induced the
decomposition of J-aggregates formed in solution on the
account of their formation on NPs surface. The obtained
results enabled the evaluation of number of TC molecules
per AgNPs participating in J-aggregate formation. The
experimental results yielded about 320 molecules of TC
per AgNPs in at least three layers in a slanted orientation.







Physical description


21 - 7 - 2014
27 - 5 - 2015
4 - 2 - 2015


  • Department of Chemistry, Science University of
    Priština, 38220 KosovskaMitrovica, Serbia
  • Vinča Institute of Nuclear
    Sciences, University of Belgrade, P.O. Box 522, Belgrade, Serbia
  • Vinča Institute of Nuclear
    Sciences, University of Belgrade, P.O. Box 522, Belgrade, Serbia


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